EP 2210130 B1 20151223 - SPEED SENSOR
Title (en)
SPEED SENSOR
Title (de)
GESCHWINDIGKEITSSENSOR
Title (fr)
CAPTEUR DE VITESSE
Publication
Application
Priority
- NL 2008050671 W 20081024
- NL 2000959 A 20071024
- NL 2001627 A 20080528
Abstract (en)
[origin: WO2009054724A2] A speed sensor 21 comprises a static part 3 and a dynamic part 5 arranged concentrically inside it. The static part 3 has two permanent magnets 7A and 7B and the dynamic part 5 has two iurther permanent magnets 9 and 11. The magnet 9 is oriented reversely to the iurther magnets 7A, 7B and 11. The magnets are tuned to each other so that gravity on the dynamic part is counteracted by the magnetic force on the dynamic part. As a result, the weight of the dynamic part need not be carried by springs and the dynamic part can move freely so that the full stroke can be used for measuring accelerations and the natural frequency is low. The static part 3 further includes a measuring coil 15 for measuring the displacement of the dynamic part and for the radial positioning of the dynamic part this part is connected to the static part 3 by means of leaf springs 17.
IPC 8 full level
G01P 15/11 (2006.01); G01V 1/18 (2006.01)
CPC (source: EP US)
G01P 3/52 (2013.01 - EP US); G01P 15/11 (2013.01 - EP US); G01V 1/181 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009054724 A2 20090430; WO 2009054724 A3 20101021; EP 2210130 A2 20100728; EP 2210130 B1 20151223; NL 2001627 C2 20090427; US 2011259102 A1 20111027; US 8922197 B2 20141230
DOCDB simple family (application)
NL 2008050671 W 20081024; EP 08840896 A 20081024; NL 2001627 A 20080528; US 73972608 A 20081024